/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.rocketmq.client.consumer.listener;

/**
 * 并发消费mq消息结果
 */
public enum ConsumeConcurrentlyStatus {

    /**
     * Success consumption
     * 成功消费
     */
    CONSUME_SUCCESS,

    /**
     * Failure consumption,later try to consume
     * 失败消费，稍后尝试消费
     *
     *
     * 如果 {@link MessageListener}返回的消费结果为 RECONSUME_LATER,则需要将这些消息发送给Broker延迟消息。
     * 如果给broker发送消息失败,将延迟5s后提交线程池进行消费。
     *
     * RECONSUME_LATER的消息发送入口: MQClientAPIImpl#consumerSendMessageBack,
     * 命令编码: {@link org.apache.rocketmq.common.protocol.RequestCode#CONSUMER_SEND_MSG_BACK}
     */
    RECONSUME_LATER;
}
